Minor

Description

The "Unused Local Variables Should Be Removed" code rule for SQL Server requires that any unused local variables be removed from the code. Unused local variables are variables that are declared but not used in the code. This rule is designed to help keep code clean and efficient by removing unnecessary variables that are declared but not used. Removing unused variables can help improve the readability of the code and reduce the amount of memory and processor resources used by the code. This rule can be enforced by a code analysis tool or manually by a developer.

Key Benefits

• Reduced complexity: Removing unused local variables reduces the complexity of the codebase, making it easier to read and maintain.
• Improved performance: Unused local variables can cause unnecessary memory usage and slow down the performance of the application.
• Enhanced readability: Removing unused local variables can make the code easier to read and understand.

Non-compliant Code Example

CREATE TRIGGER [DATA].COUNTER_Update
ON [DATA].COUNTER
AFTER UPDATE 
AS
BEGIN
    DECLARE @n int  --Non compliant code (Unused local variable)
    PRINT ' Update the counter'
END